AirHint found the following cheapest return flights from Washington (DCA) to San Jose (SJO) in October 2025 (see full year).

Return flights

29 Oct - 30 Oct	United
30 Oct - 02 Nov	United
27 Oct - 01 Nov	United
26 Oct - 05 Nov	United
31 Oct - 02 Nov	United
31 Oct - 03 Nov	United
22 Oct - 29 Oct	United
21 Oct - 28 Oct	United
20 Oct - 27 Oct	United
20 Oct - 29 Oct	United
23 Oct - 27 Oct	United
19 Oct - 24 Oct	Southwest Airlines
23 Oct - 29 Oct	United
23 Oct - 30 Oct	United
23 Oct - 28 Oct	United
24 Oct - 02 Nov	Delta

Also check the deals for one-way flights from Washington to San Jose in October.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Washington to San Jose in October from 202€

Return flights